left cylinder compression seems low.

[Braap_a_Banshee]

i just rebuilt my top end, eliminated the tors, and advanced my timing +4. and the left cylinder's compression is lower than the right, or at least it sounds and feels like it through the exhaust. i have switched the plugs and caps. any suggestions????

[SAVAGE420]

Did you do a compression test to 100% confirm the compression in both cylinders?

Listening and feeling wont tell you the compression.

[rdzbangshee]

i just rebuilt my top end, eliminated the tors, and advanced my timing +4. and the left cylinder's compression is lower than the right, or at least it sounds and feels like it through the exhaust. i have switched the plugs and caps. any suggestions????

hope its not less than a 10 psi defrence it wont run with less than 90 psi. good luck breakin it in.

[Braap_a_Banshee]

where do i purchase a compression gauge? if you guys have not noticed, this is my first rebuild of any bike.

[SAVAGE420]

where do i purchase a compression gauge?

Any local auto parts store near you will have one. Or borrow one from a friend .

 

Prices range from $20-$400 or so for a one.

[Braap_a_Banshee]

i tinkered around with things and had a chance to break it in a little today and the problem has faded away 100% im still going to invest in a compression gauge though. thanks for all the input guys.